Thermometry in pressurized, sooting flames using laser-induced gratings

Michael S. Brown; William L. Roberts

doi:10.1117/12.279755

Thermometry in pressurized, sooting flames using laser-induced gratings

Michael S. Brown, William L. Roberts

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Scopus citations

Abstract

We have performed non-intrusive thermometry in rich ethylene/air flames using a frequency measurement based on laser-induced gratings. Light from a cw probe beam is coherently scattered from a thermal or electrostrictive grating induced by the pulsed pump beams. The Doppler modulation of the signal beam is determined by the local speed of sound from which a temperature can be extracted. Soot particles, acting as blackbody absorbers do contribute to the signal.

Original language	English (US)
Title of host publication	Proceedings of SPIE - The International Society for Optical Engineering
DOIs	https://doi.org/10.1117/12.279755
State	Published - Dec 1 1997
Externally published	Yes

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title = "Thermometry in pressurized, sooting flames using laser-induced gratings",

abstract = "We have performed non-intrusive thermometry in rich ethylene/air flames using a frequency measurement based on laser-induced gratings. Light from a cw probe beam is coherently scattered from a thermal or electrostrictive grating induced by the pulsed pump beams. The Doppler modulation of the signal beam is determined by the local speed of sound from which a temperature can be extracted. Soot particles, acting as blackbody absorbers do contribute to the signal.",

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N2 - We have performed non-intrusive thermometry in rich ethylene/air flames using a frequency measurement based on laser-induced gratings. Light from a cw probe beam is coherently scattered from a thermal or electrostrictive grating induced by the pulsed pump beams. The Doppler modulation of the signal beam is determined by the local speed of sound from which a temperature can be extracted. Soot particles, acting as blackbody absorbers do contribute to the signal.

AB - We have performed non-intrusive thermometry in rich ethylene/air flames using a frequency measurement based on laser-induced gratings. Light from a cw probe beam is coherently scattered from a thermal or electrostrictive grating induced by the pulsed pump beams. The Doppler modulation of the signal beam is determined by the local speed of sound from which a temperature can be extracted. Soot particles, acting as blackbody absorbers do contribute to the signal.

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DO - 10.1117/12.279755

M3 - Conference contribution

BT - Proceedings of SPIE - The International Society for Optical Engineering

ER -

Thermometry in pressurized, sooting flames using laser-induced gratings

Abstract

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